les lettres muettes
[e] versus [ɛ]
[u] versus [y]
l'élision
[œ/ə] versus [ø]
[ɔ] versus [o]
[ɑ̃] versus [ɔ̃]
100% oral : la disparition
[ɥ] [j] [w]
les consonnes familières
[b] versus [v]
[s] versus [z] et la lettre x
100% oral : devant une consonne
